A mineral composed of cobalt, iron, and arsenic sulfide, named for its gray-white color and metallic luster.
From Greek 'glaukos' (grayish) plus 'dot' (relating to an ore or mineral). The name describes the characteristic gray coloring of this rare sulfide mineral.
Glaucodot is one of the few arsenic minerals that's actually safe to handle because the arsenic is locked tightly into the crystal structure—but it's still handled carefully because science respects the danger!
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